| Stadium Name: | Harboe Arena Slagelse |
| Location: | Parkvej 41, DK-4200 Slagelse, Denmark |
| Coordinates: | 55.3994°N 11.3643°W |
| Owner: | Slagelse Municipality |
| Operator: | Slagelse B&I |
| Tenants: | Slagelse B&I (1927–) FC Vestsjælland (2008–2015) |
| Opened: | 1927 |
| Renovated: | 2012–2013 |
| Dimensions: | 105x |
| Surface: | Grass |
| Seating Capacity: | 10,000 (3,300 seats) |
| Record Attendance: | 9,023 (vs. Holbæk B&I, 1973) |
Slagelse Stadium (Danish: Slagelse Stadion; currently known as Harboe Arena Slagelse for sponsorship reasons) is a sports center located in Slagelse, Denmark, which, among other things, is used for athletics and the running of football matches on the associated stadium, including home games for Slagelse B&I. Formerly, its elite project FC Vestsjælland also used the stadium as its home ground.
The sports complex was built in 1927 by Slagelse Municipality, among others, as a result of the complete merging of Slagelse Boldklub and Slagelse Idræts-Forening to Slagelse B&I i 1919. The stadium has a capacity of 10,000, of which 3,300 are seating. The stadium record of 9,023 spectators dates back to the early 1970s, when it hosted with a division match in Danish top tier between Slagelse B&I and Holbæk B&I.
In 2012, the stadium was rebuilt to include heating in the field, new lighting, new stands, among other improvements.[1]